Remove setting to disable update error notifications and split out notification channel

Users can exclude things from updating if needed, or disable the notification channel from system settings.

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateNotifier.kt

@@ -51,7 +51,7 @@ class LibraryUpdateNotifier(private val context: Context) {
      * Cached progress notification to avoid creating a lot.
      */
     val progressNotificationBuilder by lazy {
-        context.notificationBuilder(Notifications.CHANNEL_LIBRARY) {
+        context.notificationBuilder(Notifications.CHANNEL_LIBRARY_PROGRESS) {
             setContentTitle(context.getString(R.string.app_name))
             setSmallIcon(R.drawable.ic_refresh_24dp)
             setLargeIcon(notificationBitmap)
@@ -101,7 +101,7 @@ class LibraryUpdateNotifier(private val context: Context) {
 
         context.notificationManager.notify(
             Notifications.ID_LIBRARY_ERROR,
-            context.notificationBuilder(Notifications.CHANNEL_LIBRARY) {
+            context.notificationBuilder(Notifications.CHANNEL_LIBRARY_ERROR) {
                 setContentTitle(context.resources.getQuantityString(R.plurals.notification_update_error, errors.size, errors.size))
                 setStyle(
                     NotificationCompat.BigTextStyle().bigText(

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt

@@ -350,7 +350,7 @@ class LibraryUpdateService(
             }
         }
 
-        if (preferences.showLibraryUpdateErrors() && failedUpdates.isNotEmpty()) {
+        if (failedUpdates.isNotEmpty()) {
             val errorFile = writeErrorFile(failedUpdates)
             notifier.showUpdateErrorNotification(
                 failedUpdates.map { it.first.title },